A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5999-01-249-1056
NSN 6220-01-363-6652
NSN 5895-01-146-5382
NSN 5915-01-027-0800
NSN 6240-01-138-6453
NSN 5985-00-115-2071
NSN 6130-01-116-2571
NSN 5990-01-604-0862
NSN 5975-01-350-2618
NSN 2925-00-540-9918
NSN 6645-00-704-3630
NSN 6610-01-357-4345